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耳机不够。Bose为汽车引入了降噪技术_我的网站

中国繁育最美蛇

一 | 1月10日，Bose希望将其备受赞誉的降噪技术从耳机到汽车。

二 | 这家总部位于马萨诸塞州弗里明翰的公司刚刚推出了一项名为“安静舒适”的新技术，该技术声称能够测量车辆振动以消除日常驾驶中的噪音。 Birkenstock took a big step forward on Wall Street this week, taking the nearly 250-year-old German shoe and sandal maker public.The footwear, often seen as a counter culture shoe for hippies, and in more recent years influencers, has become must-have footwear for many people, but Birkenstock's Initial Public Offering, or IPO, which was originally priced at $46 per share, didn't attract the dress shoe-wearing stock brokers on Wednesday.Shares opened at $41, near the lower end of its expected range of $44 to $49 set a week prior, as Birkenstock CEO Oliver Reichert rang the opening bell in a room surrounded by traders sporting the opened-toed footwear and others waving the sandals in the air.Birkenstock Holding Ltd. sold nearly 10.8 million shares in the offering, which raised about $495 million on the day. Its shareholders sold an additional 21.5 million shares, according to the Associated Press."Through the strong reputation and universal appeal of our brand -- enabling extensive word-of-mouth exposure and outsized earned media value -- we have efficiently built a growing global fanbase of millions of consumers that uniquely transcends geography, gender, age and income," Birkenstock said in a recent regulatory filing with the Securities and Exchange Commission, according to the AP.What started out in 1774 as a somewhat frumpy, but functional arch support sandal has transformed into a cult fashion item and billion dollar business, bolstered with support from the recent blockbuster hit "Barbie" when Margot Robbie's character is forced to choose between high heels or the strappy suede footwear.In tandem with the opening on Wall Street, Birkenstock hosted three consumer activations in public parks throughout Manhattan and Brooklyn.To highlight New York as "the city that never stops walking," the brand created what it dubbed "Birkenfields" for a public sensory experience that explored the brand's nearly 250-year heritage and expertise in foot health.The global brand is deeply rooted in foot health maintenance as well as a family tradition of shoemaking: Its inventor sought to provide function, quality and tradition as Birkenstock's core values.Over 95% of Birkenstock products are assembled in Germany with more than 90% of their materials and components sourced from Europe, ensuring the brand meets "the highest environmental and social standards in the industry by operating state-of-the-art scientific laboratories for materials testing," according to a company press release.。Bose指出，随着汽车的重量越来越轻，电动汽车越来越多，这种降噪技术可能会受到越来越多的关注。坐在安静的电动汽车里的司机比坐在嘈杂的内燃机车更容易受到道路噪音的影响。Bose将这项技术定位为展望未来，因为道路上会有更多的电动汽车。那么它是如何工作的呢？传统的车辆降噪方法包括使用更厚的绝缘材料或专用轮胎，以尽量减少在崎岖不平的道路上行驶时产生的噪音。但这些方法增加了车辆重量，降低了燃油效率。Bose使用加速度计、专有的信号处理软件、麦克风和汽车内置音响系统的组合来“电子控制不需要的声音”。Bose说：安装在车身上的加速度计使Bose算法能够连续测量产生噪音的振动。然后，利用该信息计算出通过车辆扬声器传输的消声信号，以降低目标噪声。

三 | 放置在驾驶室中的麦克风监控残余噪音水平，允许系统调整控制信号以优化不同道路上的性能，并随车辆老化自动调整。虽然Bose有一个非常著名的降噪耳机，但它的车是一个非常不同和复杂的环境。该公司指出，自2010年以来，其汽车部门已向汽车制造商提供了ehc，这是一项用于降低劣质发动机噪音的高目标技术。